Heel-burnishing machine



0 H. M. LO OMER. HEELBUBNISHING MAGHINE.

2 Sheets-Sheet 1.

(No Model.)

NITED. STATES PATENT OFFI E.

HENRY M. LOOMER, BOSTQNyMASSACHUSETTS, ASSIGNOR TO 'TI-IETAPIJEY MACHINECOMPANY, OF PORTLAND, MAINE.

HEEL- BURNISHI NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 505,050, datedSeptember 12 Application filed February 10, 13 2. stain No. 421,037. (Nomodel.)

To all whom it may concern:

Be it known that I, HENRY M. LOOMER, of.

Boston, county of Suffolk, State of Massachm setts, have invented anImprovement in Heel- Burnishing Machines, of which the followingdescription, in connection with the accompanylng drawings, is aspecification, like letters and figures on the drawings representinglike parts.

This invention is intended asan improvement on that classof heelburnishin g machines wherein a vibrating arm provided with a piv-.

oted burnishing tool is made to oscillate about the heel of a shoe, thetool bearing on theheel and burnishing the samefrom its heel-seat to itstread end, the jack carrying the shoe'in the meantime being moved inthedirection of the length of the heel.

In my invention I have provided improved means for keeping the toolagainst the heel during the vibrations of the arm carrying the same; andI have devised means whereby the burnishing machine embodying myinvention;

Fig. 2, is a rear end elevation of the machine shown in Fig. 1; Fig. 3,a front end elevation; Fig. 4, a detail from the rear side ofthe machineshown in Fig. 1 chiefly to illustrate devices instrumental in impartingto the jack a movement to carry the heel under the burnishing tool. Fig.5, is a section in the line 00 Fig. 4; Fig. 6, a longitudinal horizontalsection in the dotted line through the rod g, Fig. 1. Fig. 7, is asectional detail of'theparts mounted on the stud B. Fig. 8, is a detailof one of the clamps to show the dog within it, and part of the jackrod. Fig. 9, is a modification of my invention. Fig. 10 shows a modifiedform of sector. I

A represents the frame work of any suitable shape to support 'theworking parts. i

The main power shaft A, which may be ro-.

tated from any suitable source, has fast upon it three pulleys A A A,the pulley A receiving a cross-belt A which surrounds and rotates apulley B, loose on a stud B to be described. The pulley A is surrounded.by an open belt A extended over va pulley A having a crank pin A saidcrank pin receiving upon it a connecting rod A joined by a pm A to anoutwardly extended arm of a lever 0 having as its center of motion thestud B referred to. The upper end of the lever O, as shown best in Fig.2, has ears between which is placed part of a lever O, a pin 0, pivotingthe lever. 0 upon the lever 0. As represented the lever C is a sort ofthreearmed lever, one arm as stated being pivoted at::, another armbeingjoined by a pin 0' to the. eccentric strap? 61 surrounding aneccentric 15, connected to andforming part of the pulley B, the saideccentric and pulley being freely rotated on the stud B, and in itsrotation causing the lever C to be moved about its pivot or point ofoscillation 0 several times during each rotation of the crank pin A Theupper arm 0 of the lever 0 preferably round, is made to engage a sectorD in such manner that the lever moves the sector in unison with it, thejoint between the lever and sector being a ball-joint. In practice,however, this invention is not limited to the particular shape of thelever G or its particularform of connection with the sector, so long asthe jointloetween the lever and sector is of the nature ofa universal orself-adapting joint. Neither. is my .invention limited to the exactshapeshown for the sector, nor to the exact point at which the leverjoins the sector or its equivalent. The function andpurpose of thissector are to hold the ends of straps d which are suitably connectedthereto, preferably by plates 3, having screws 4:, the opposite ends ofthe strap being passed about a drum D on an oscillating shaft D so thatas the sector is reciprocated in the direction of its length, it willthrough the straps oscillate the shaft D This invention is not to belimited to the use of two straps, as it will be obvious that a singlestrap or cord might be made to perdicated in the modification Fig. 10,and the drum D with teeth.

The sector D herein shown is pivoted or oscillated about the stud B. Inthe present instance, however, of my invention, wherein I have seen fitto depend upon a flexible connectlon between the sector and drum, I havecombined with the ends of the straps, takeup studs D which are split toreceive the ends of the straps, the rotation of the takeup studsstretching the straps, the blocks 3 being compressed against the strapson one side, while the take-up studs bear against their other sides.

The oscillating shaft D has fast upon it the block E having earsebetween which by a pin e is pivoted the arm E provided at its free endWith the burnishing tool 6 it being of any usual or suitableconstruction. The arm E has suitably connected with it a link fwhich isattached by pin f to two linksf f constituting a toggle lever, the linkfbeing pivoted atf upon a part of the block, while the link f is pivotedatf upon a collar f surrounding a shaft g also surrounded by a spring9', see Fig. 6, the latter acting normally to move the shaft in suchdirection as to cause the pivot f 5 to approach the pivot f thus holdingthe toggle lever f ,f in such position that bythe said lever andlinkfthe tool will be kept in contact with the heel h being burnished,the force of contact of the tool against the heel being thus determinedby the spring g. It will be also noted that when the arm E is liftedaway from the work sufficiently to cause the pivotal point or jointf topass below the line of the two pi votsfflf the said arm will be held inits elevated position.

I have provided, see Fig. 6, a nut g by which to regulate the effectiveforce of the spring g according to the work to be done. The pulley A onthe shaft A by the belt h over the pulley 71 rotates the shaft 71. it inpractice having a worm it, see Fig. 4, which engages a worm toothedwheel 72. provided with a cam-groove it represented as of heartshape,said cam-groove receiving a pin it of a radius bar 72 pivoted at h, thesaid radius bar having jointed to it at h a latch 72. shown best in Fig.1, the outer end of the said latch being suitably shaped to engage aprojection 71 forming part of the sleeve h to which jacks m and m areattached, best shown in Fig. 3, two such jacks being preferably used inorder that while the heel of one shoe is being burnished, the operatormay either remove from the other jack a shoe the heel of which has beenburnished, or apply to the said jack a shoe, the heel of which is nextto be burnished. The projection 71 is of such shape that it may beengaged by the latch of whichever jack is uppermost. The sleeveh isadapted to be reciprocated and oscillated on a suitable guide or support71,

The frame work of the machine is provided with a guide m between thesides of which that the heel being acted upon by the tool will be movedlongitudinally under the tool.

In practice it is the more common to commence burnishing the heel whenthe jack is to the right viewing Fig. 1, the jack being moved outwardlyso that the tool commences to act upon the heel-seat end of the heel andfollows down to the tread end, and during this operation for the bestresults the guide or track h should rise automatically to thereby insurethe same uniformity of contact between the tool and heel. I accomplishthis upward movement of the track 71 in the following manner:-Referringto Fig. 1, the shaft n, it being the same shaft to which is attached theWorm wheel W, has a cam 07. which acts upon a roller n at the upper endof a link n guided in a suitable box 71. and jointed at its lower end toa lever n having a suitable pivot as at n, the opposite end of the saidlever being shaped to engage the lower end of the vertically movingslide n which carries the track 72. referred to, a spring a in thispresentinstance actingto keep the rollern against the cam n. The sleeve72 has suitably pivoted upon it suitable latches 10, 12, which areadapted to engage respectively with the projection 13 forming part of orextended from the vertically moving slide M, the said latches beingsolely for the purpose of retaining a jack m or m in proper verticalposition so that it may correctly registerwith and enter the opening inthe guide m the jack min Fig. 3 being shown in vertical position. Thejack rod 0 is surrounded bya spring 0 which normally acts to retract thejack rod. This jack rod has teeth 20 which are adapted to be engaged bythe teeth of a dog 21 mounted upon an eccentric 22, fast on a shaft 23,having a suitable hand-wheel 24 by which the said eccentric may beturned when desired. A spring 28 fast upon or with relation to the jackbears upon the dog 21 and normally acts to throw the teeth of the dogout from engagement with the teeth of the jack rod 0 when the eccentricis in position to retract the dog 21 to the left, viewing Figs. 1 and 8,the end of the dog when the eccentric has its point of gravity in theposition to the left viewing said figures sliding by the projection 29.

In the use of these devices the shoe having been put upon the jack rodthe operator will push against the outer end of the jack rod by hisbreast, and with his hand on the handwheel 24 will rotate the shaft 23causing the eccentric 22 to'be moved in the direction of the arrow nearit into substantially the position Fig. 8 and during such movement theteeth of the dog in engagement with the teeth of the jack rod will causethe jack rod to be moved slightly to the right to yet further clamp theheel and at the same time the dog riding upon the projection 29 willlock the jack rod and fix it in position so that it cannot be releasedor shaken off until the eccentric is returned. The teeth of the dog andrack are sufficiently thin to enable the jack rod to adapt itself to anythickness of heel. shaft 23 carrying the eccentric 22 has, asrepresented in Fig. 1, a projection 40 at or near the hand-wheel or handdevices 24, against which acts a spring 41, the latter serving normallyto keep the eccentric 22 on the shaft 23, in such position as to causethe toothed end of the dog to engage the teeth of the jack rod when thelatter is pushed forward by the operator the movement of the shaft 23against the spring 41 for some little distance effecting the release ofthe dog from the jack rod.

While I prefer to use between the tool-carrying arm E and the springcontrolled rod g,

the link system shown in Fig. 1, yet my invention is not to be limitedto the precise construction of the said links which constitute jointedconnections between said rod and arm. for in Fig. 9, I have shown forsuch purpose an elbow lever 19, pivoted at p, and an intervening link 19Having described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. In a heel-burnishing machine, an oscillatin g shaft, and an armoperatively connected therewith, and provided with a heel-burnishingtool; combined with a link pivoted thereto, a lever to which said linkis also pivoted and a spring acting upon and to normally cause the leveracting through the link to keep the tool in contact with the heel with ayielding pressure,substantially as described.

2. In a heel-burnishing machine, the oscillating shaft, the blockattached thereto, provided with a slide rod, a spring surrounding saidslide rod, and a pivoted tool-carrying arm, combined with jointed.connections between said rod and arm, substantially as described.

3. In a heel-burnishing machine, the oscillating shaft, the blockattached thereto, provided with a slide rod, a springsurrounding saidslide rod, and a pivoted tool-carrying arm, combined with jointedconnections between said rod and arm; and with means to adjust the forceof the spring, substantially as described.

4. In a heel-burnishing machine, an oscil- The.

tions between said sector and shaft; a crank to effect themovement ofthe said sector to carry the tool from breast to breast of the heel, andan eccentric, and intermediate lever connected by a universal joint toand cooperating with the said sector to reciprocate the same during eachcomplete stroke efiected by the crank referred to, to operatesubstantially as described.

5. In a heel-burnishing machine, an oscillating tool-carrying arm, aslide having a track, and a cam, and intermediate devices to raise thesaid slide, combined witha shoeholding jack mounted upon a trackextended from the said slide, and with a cam and intermediateconnections between it and the said jack to move the same longitudinallyupon the said track to enable the heel to be burnished from one to itsother end during the vibrations of the tool about the heel from breastto breast, substantially as described.

6. In a heel-burnishing machine, a vertically-movable slide providedwith a track,

actuating devices for said slide, combined jack, and avertically movableslide on which said jack is mounted, of a lever, alink, .and a cam tomove the slide and jack vertically, anda cam to move the jackhorizontally on said slide bar, substantially as described.

8. In combination with heel burnishing mechanism, a yoke-like jack tohold the shoe, a toothed jack rod, a toothed locking dog and aneccentric upon which said dog is mounted to actuate the said dog andincrease the holding force of the jack rod, a shaft upon which theeccentric is fast, and means to turn the shaft, substantially asdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

HENRY M. LOOMER.

Witnesses:

Gno. W. GREGORY, FRANCES M. NOBLE.

I oo

